Here is the link to the laband the worksheet https://www.youtube.com/watch?v=0UPNcmZQ-KQ
Worksheet_Mitosis
Name:
Fill Out the Blanks (based on the handout):
Table 1. The cell cycle through a series of precisely timed and carefully regulated stages.
Interphase
The Mitotic Phase
G1
S
G2
Anaphase
General and Critical Thinking Questions (Answer the questions based on the video you watched):
1.In onions, what is the type of stem that grows underground?
2.What is the region near the tip of an onion root called?
3.Why should we be able to see cells in the various phases of mitosis when the root tip is examined under a microscope?
4.What was used to break down the plant’s hard cell walls?
5.What is the solution that will stop any chemical or biological reactions that might be occurring so that a biological sample can be preserved for longer use?
6._________________ is used to identify the terminal end of the root tip.
7._________________ is the dye that stains the DNA in order to see it more clearly.
8.Why was a paper towel placed over the cover slip and slowly and firmly pressed down on the cover slip? Explain.
9.Which objective lens was used to see a large portion of the sample?
10.Most of the cells will be in _________________.
11.Why were individual chromosomes not so visible during interphase?
12.__________________ is the process by which a chromosome produces a duplicate of itself.
13.What is the first phase of mitosis?
14.__________________ is the process in which a replicated chromosome twists around itself to become shorter and thicker.
15.During __________________, the cell’s nuclear membrane is dissolved.
16.In which phase are the shapes of the replicated chromosomes becoming easier to distinguish?
17.What are the hollow protein tubes that extend across the cell to attach to the replicated chromosomes after the nuclear membrane’s dissolved?
18.What is spindle? Explain.
19.What happens during metaphase? Explain.
20.What happens during anaphase? Explain.
21.What is the last phase of mitosis and what happens during the phase? Explain.
22.Why is mitosis important in an onion?